High gain broadband stacked triangular microstrip antennas. Issue 9 (23rd March 2020)

• Record Type: Journal Article
• Authors: Chopra, Rinkee; Kumar, Girish
• Is Part Of: Microwave and optical technology letters. Volume 62:Issue 9(2020:Sep.)
• Page Start: 2881
• Page End: 2888
• Publication Date: 2020-03-23
• Subjects: broadband -- electromagnetically coupled -- ETMSA -- gap coupled -- microstrip -- multilayer -- multiresonator -- stacked; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.32372
• Languages: English
• ISSNs: 0895-2477

Abstract

Abstract: A low cost, broadband, and high gain stacked equilateral triangular microstrip antenna (ETMSA) is designed to cover the frequency band from 1700 to 2600 MHz with low cross polar level (X‐pol). The antenna consists of a metallic ETMSA at the bottom layer and three parasitically coupled ETMSAs (1B3T) are printed symmetrically on the bottom side of the top FR‐4 substrate layer, which is supported by foam inserted between the top and bottom layers. The bottom patch is shorted by a metallic via at its center. It improves the X‐pol in upper frequency band. The 1B3T ETMSA is further enclosed in a metallic cavity to improve the gain and front to back ratio (F/B). The fabricated 1B3T ETMSA provides 42.2% BW with peak gain of 10.8 dBi, F/B of more than 15.8 dB and X‐pol of less than −13.6 dB throughout the BW. The proposed antenna can be used for RF energy harvesting in 2G, 3G, 4G, and Wi‐Fi frequency bands.